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Merge pull request #70 from prometheus/handle-process-collector-errors-gracefully 

Handle process collector errors gracefully
This commit is contained in:
Tobias Schmidt 2015-02-11 15:08:24 -05:00
parent 6760c3aacd 98061eecab
commit acbd2d3eac
1 changed files with 6 additions and 27 deletions
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33
prometheus/process_collector_procfs.go
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@ -24,26 +24,20 @@ func processCollectSupported() bool {
return false return false
} }
// TODO(ts): Bring back error reporting by reverting 7faf9e7 as soon as the
// client allows users to configure the error behavior.
func (c *processCollector) processCollect(ch chan<- Metric) { func (c *processCollector) processCollect(ch chan<- Metric) {
pid, err := c.pidFn() pid, err := c.pidFn()
if err != nil { if err != nil {
c.reportCollectErrors(ch, err)
return return
} }
p, err := procfs.NewProc(pid) p, err := procfs.NewProc(pid)
if err != nil { if err != nil {
c.reportCollectErrors(ch, err)
return return
} }
if stat, err := p.NewStat(); err != nil { if stat, err := p.NewStat(); err == nil {
// Report collect errors for metrics depending on stat.
ch <- NewInvalidMetric(c.vsize.Desc(), err)
ch <- NewInvalidMetric(c.rss.Desc(), err)
ch <- NewInvalidMetric(c.startTime.Desc(), err)
ch <- NewInvalidMetric(c.cpuTotal.Desc(), err)
} else {
c.cpuTotal.Set(stat.CPUTime()) c.cpuTotal.Set(stat.CPUTime())
ch <- c.cpuTotal ch <- c.cpuTotal
c.vsize.Set(float64(stat.VirtualMemory())) c.vsize.Set(float64(stat.VirtualMemory()))
@ -51,34 +45,19 @@ func (c *processCollector) processCollect(ch chan<- Metric) {
c.rss.Set(float64(stat.ResidentMemory())) c.rss.Set(float64(stat.ResidentMemory()))
ch <- c.rss ch <- c.rss
if startTime, err := stat.StartTime(); err != nil { if startTime, err := stat.StartTime(); err == nil {
ch <- NewInvalidMetric(c.startTime.Desc(), err)
} else {
c.startTime.Set(startTime) c.startTime.Set(startTime)
ch <- c.startTime ch <- c.startTime
} }
} }
if fds, err := p.FileDescriptorsLen(); err != nil { if fds, err := p.FileDescriptorsLen(); err == nil {
ch <- NewInvalidMetric(c.openFDs.Desc(), err)
} else {
c.openFDs.Set(float64(fds)) c.openFDs.Set(float64(fds))
ch <- c.openFDs ch <- c.openFDs
} }
if limits, err := p.NewLimits(); err != nil { if limits, err := p.NewLimits(); err == nil {
ch <- NewInvalidMetric(c.maxFDs.Desc(), err)
} else {
c.maxFDs.Set(float64(limits.OpenFiles)) c.maxFDs.Set(float64(limits.OpenFiles))
ch <- c.maxFDs ch <- c.maxFDs
} }
} }
func (c *processCollector) reportCollectErrors(ch chan<- Metric, err error) {
ch <- NewInvalidMetric(c.cpuTotal.Desc(), err)
ch <- NewInvalidMetric(c.openFDs.Desc(), err)
ch <- NewInvalidMetric(c.maxFDs.Desc(), err)
ch <- NewInvalidMetric(c.vsize.Desc(), err)
ch <- NewInvalidMetric(c.rss.Desc(), err)
ch <- NewInvalidMetric(c.startTime.Desc(), err)
}